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首页> 外文期刊>Power Electronics, IET >Modified model predictive torque control for a PMSM-drive with torque ripple minimisation
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Modified model predictive torque control for a PMSM-drive with torque ripple minimisation

机译：具有扭矩纹波最小化的PMSM驱动的改进模型预测扭矩控制

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摘要

This paper presents an improved model predictive torque control (MPTC) scheme for a permanent magnet synchronous machine (PMSM). In conventional finite set model predictive control (FS-MPC), the optimal voltage space vector (VSV) is selected for application in the voltage source inverter (VSI) by the evaluation and minimisation of a cost function; however, the application of a single VSV in the whole control cycle leads to a relatively high torque ripple and a high sampling time is necessary to overcome this issue. In order to reduce these shortcomings without sacrificing torque reaction performance, a modified MPTC is proposed. First, in order to reduce the computational burden, a switching table is introduced for a reduction in the selection of the possible VSVs; further, to reduce the torque ripple, the duty cycle optimisation of a subset of VSVs available from the VSI is performed. The conventional FS-MPC and the proposed control scheme are implemented using a field programmable gate array, and are experimentally compared in terms of torque and flux ripple, current harmonics, and computational effort.
机译：本文提出了一种改进的永磁同步机（PMSM）的模型预测扭矩控制（MPTC）方案。在传统的有限设定模型预测控制（FS-MPC）中，选择最佳电压空间矢量（VSV）以通过评估和最小化成本函数在电压源逆变器（VSI）中应用;然而，在整个控制周期中的单个VSV的应用导致相对高的扭矩脉动，并且需要高采样时间来克服这个问题。为了减少这些缺点而不牺牲扭矩反应性能，提出了一种改性的MPTC。首先，为了减少计算负担，引入切换表以减少可能的VSV;此外，为了减小扭矩脉动，执行从VSI可获得的VSV的子集的占空比优化。传统的FS-MPC和所提出的控制方案是使用现场可编程门阵列实现的，并且在扭矩和磁通纹波，电流谐波和计算工作方面进行实验比较。

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